Friction stir processing – State of the art

Węglowski, M. S.

doi:10.1016/j.acme.2017.06.002

Cited by 228 publications

(85 citation statements)

References 99 publications

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“…The balance heat state can be attained by the proper selection of process parameters. Among the various process parameters, tool pin profile is one of the dominant parameter which governs the heat state of friction stir processing of friction stir processed/silicon carbide particle surface composite [21][22].…”

Section: Effect Of Pin Profiles On Materials Flowmentioning

confidence: 99%

Role of tool pin profiles on wear characteristics of friction stir processed magnesium alloy ZK60/silicon carbide surface composites

Kumar

Padmanaban

Balasubramanian

2020

Materialwissenschaft Werkst

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Poor friction and wear resistance are the major drawbacks that restrict structural applications of ZK60 magnesium alloys. The surface properties of magnesium alloy can be enhanced by reinforcing particles in the surface using friction stir processing (FSP). Tool pin profile is the significant process parameters which influences the material flow, particle breakups and its distribution in the processed zone. In this study, an attempt was made in order to understand the major effects of tool pin profiles namely, cylindrical thread (CT), plain cylindrical (PC), plain tapered cylindrical (PTC) and square (SA) pin profiles on the microstructure characteristics and particle distribution of friction stir processed/silicon carbide particle surface composites. The surface composites fabricated by plain tapered cylindrical pin profile yield superior properties which is attributed to the higher shear force and balanced state of material flow and heat generation in the processed zone. The formation of smaller grains and hardness enhancement due to dispersion strengthening are the main causes to get better wear resistance of friction stir processed/silicon carbide particle magnesium alloy.

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Section: Effect Of Pin Profiles On Materials Flowmentioning

confidence: 99%

Role of tool pin profiles on wear characteristics of friction stir processed magnesium alloy ZK60/silicon carbide surface composites

Kumar

Padmanaban

Balasubramanian

2020

Materialwissenschaft Werkst

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“…The relation between strain rate, flow stress and viscosity of both AA5052 and AA7075 are shown in Figures 4 and 5, respectively. The rotational and welding speeds along with penetration depth are the main technological welding process parameters [13]. The parameters for investigation in this study were as shown in Table 2.…”

Section: Description Of the Modelmentioning

confidence: 99%

Temperature distribution of T- joint friction stir welding

Hussein¹,

Al-Jumaili²,

Mahmood³

2018

IJET

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Friction stir welding is a reliable welding method; it can be employed to join different structural configurations. Joint types such as lap, butt and T have been successfully produced by this welding method. In this study, a trial has been made to numerically simulate the heat generation and temperature distribution during the welding process of a T-joint. The workpieces materials were hardened 5052 and tempered 7075 Al Alloys, each material was investigated separately. Different rotational and welding speeds were used, besides, the pin length was also varied to accommodate the investigation of the top plate thickness effect. A visco-plastic finite element model was adopted to investigate the effect of parameters ranges on the temperature distribution. The results showed that the temperature distribution of T-joint depends mainly on the material to be welded and rotational speed. Besides, increasing the pin length from 7 to 10 mm could significantly increase the resulted temperature by approximately 14%. Therefore, the thickness of the upper plates of the T-joint plays a significant role on the resulted process temperature.

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“…In this process the microstructure of the material undergoes severe hot plastic deformation, resulting in a ultra-fine grains microstructure caused by recrystallization and recovery processes 13 . Advantages of employing FSP can span from microstructure homogenization, production of superplastic materials and special alloys, porosity reduction in casting alloys, to crack repairing 14 . Additionally, FSP can be applicable using a predeposited material in order to manufacture composites (friction stir alloying) 15 , and to coat surfaces using a consumable tool (friction surfacing) 16 .…”

Section: Introductionmentioning

confidence: 99%

“…This coupled system is promised to reduce processing forces, increase process speed and reduce manufacturing costs [17][18][19] . Apart their different technological purpose, FSP and FSW are correlated processes, as input parameters and phenomena observed during the execution of both manufacturing procedures can be linked to produce similar metallurgical results 11,12,14,20 . The friction stir welding process was already promising for the welding of duplex stainless steels [21][22][23][24] , since this process allowed to obtain welded joints with superior mechanical properties to those obtained by conventional welding, with absence of secondary deleterious phases, despite the welds obtained with this process present higher propensity to formation of these phases after the joining 25 .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Abrasive Wear in UNS S32101 and S32750 Duplex Stainless Steels Submitted to Friction Stir Processing

et al. 2019

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Duplex stainless steels are largely applied in petrochemical industries due to their high corrosion resistance and mechanical performance. Their applicability also requires a great wear resistance, which can be enhanced by friction stir processing (FSP), a surface hardening technique. In this work, FSP is utilized to process surfaces of UNS S32101 and UNS S32750. The materials were analyzed by EBSD in order to determine grain size and phase fraction. Microhardness tests were used to verify and compare the shifting of hardness values from 296 ± 8 to 314 ± 11 HV 0.2/15 and from 323 ± 8 to 350 ± 8 HV 0.2/15 for UNS S32101 and S32750, respectively. Abrasion tests were executed to study the wear behavior of both processed and unprocessed alloys. Abrasion tests indicated that the hardening by FSP promoted decrement of abrasive wear resistance. Volumetric loss increased after FSP, from 52.1 ± 0.5 to 53 ± 2 mm 3 , for UNS S32101, and from 50 ± 2 to 56.3 ± 0.3 mm 3 for UNS S32750. Tensile tests results were fitted to Hollomon's equation in order to identify mechanical properties and tendencies of strain hardening. SEM images were used to classify the wear micromechanisms acting on the samples. The results suggest that FSP can promote modifications of wear mechanisms and these changes can be correlated to the alloys' microstructure.

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Friction stir processing – State of the art

Cited by 228 publications

References 99 publications

Role of tool pin profiles on wear characteristics of friction stir processed magnesium alloy ZK60/silicon carbide surface composites

Role of tool pin profiles on wear characteristics of friction stir processed magnesium alloy ZK60/silicon carbide surface composites

Temperature distribution of T- joint friction stir welding

Evaluation of Abrasive Wear in UNS S32101 and S32750 Duplex Stainless Steels Submitted to Friction Stir Processing

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